Connection method for connection wire structure of direct light bar

A method for connecting direct light bars includes: providing connection wires, each of which has two ends to each of which a copper ring is mounted; providing light bars, each of which includes a wiring board having a first exposed copper zone that has a hole to serve as a circuit connection contact; providing a circuit board that has a second exposed copper zone including a hole to serve as a circuit connection contact; and positioning the two copper rings of each connection wire on the circuit connection contacts of the first and/or second exposed copper zones to be in alignment with the holes so as to allow the two copper rings to be connected to the holes corresponding thereto to establish circuit connection between the copper rings and the corresponding first and/or second exposed copper zones of the circuit board and the wiring boards of the light bars.